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  • 1
    Electronic Resource
    Electronic Resource
    6H,12H-6,12-methanodibenzo[b,f] [1,5]dioxocins from the reactions of o-coumaric acids and salicylaldehydes (1969)
    s.l. : American Chemical Society
    The @journal of organic chemistry 34 (1969), S. 1907-1911 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01258a084
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  • 2
    Electronic Resource
    Electronic Resource
    6H,12H-6,12-Methanodibenzo[b,f][1,5]dioxocines from the reactions of o-alkenylphenols and salicylaldehydes (1970)
    s.l. : American Chemical Society
    The @journal of organic chemistry 35 (1970), S. 3127-3129 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00834a057
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  • 3
    Electronic Resource
    Electronic Resource
    Multifunctional naphthalene containing epoxy resins and their modification by hydrosilation for electronic application (1998)
    Springer
    Polymer bulletin 40 (1998), S. 623-630 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The effect of various functionality (di-, tetra-, pentafunctionality) on mechanical, thermal and moisture absorption properties of naphthalene containing epoxy resins cured with diaminodiphenylmethane (DDS) is investigated. It was found that the glass transition temperature, retention of elastic modulus, thermal stability and moisture absorption increased as the epoxy functionality increased, however, an inverse effect on thermal expansion was observed. In order to toughen the naphthalene containing epoxy network, the epoxy resin was partially vinylized with 2-allylphenol, followed by hydrosilation using hydride terminated siloxane oligomer. SEM photographs of the modified epoxy networks exhibited a phase separation and the introduction of siloxane into the epoxy backbone has effectively reduced internal stress of the cured products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002890050300
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of high purity o-cresol formaldehyde novolac epoxy resins (1991)
    Springer
    Polymer bulletin 25 (1991), S. 559-565 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The content of total chlorine in o-cresol formaldehyde novolac epoxy resin (CNE), the main resin component for encapsulation formulation, affects the reliability of semi-conductor device greatly and it is one of the major criteria used by the electronic industry in measuring the quality of resins. A new process which synthesizes a high purity CNE with less than 300 ppm total chlorine content has been developed. This high purity resin has provided an extended device life under the accelerated stress test condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00293514
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and modification of trifunctional epoxy resin with amine terminated polydimethyl siloxanes for semiconductor encapsulation application (1996)
    Springer
    Journal of polymer research 3 (1996), S. 125-131 
    Details
    ISSN: 1572-8935
    Keywords: Triglycidyl ether of tri(hydroxyphenyl)methane (TETM) ; Amine terminated polydimethyl siloxane (ATPDMS) ; Stress ; Flexural modulus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Epoxy resins based on the triglycidyl ether of tris(hydroxyphenyl)methane (TETM) possess a very high heat distortion temperature and superior thermal oxidative stability over other types of epoxy resins. The high performance trifunctional epoxy resin (TETM) was synthesized by the condensation of a hydroxybenzaldehyde with phenol followed by epoxidation with a halohydrin. The structure of the synthesized TETM was confirmed by infrared (IR), mass spectra (MS), and nuclear magnetic resonance (NMR) spectroscopy. Amine terminated polydimethylsiloxanes (ATPDMS) were used to reduce the stress of trifunctional epoxy resin cured with phenolic novolac resin for electronic encapsulation applications. The dispersed silicone rubbers effectively reduce the stress of cured epoxy resins by reducing the coefficient of thermal expansion (CTE) and flexural modulus, while the glass transition temperature (Tg) is depressed by only a small amount.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01492903
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  • 6
    Electronic Resource
    Electronic Resource
    Dispersed acrylate rubber-modified epoxy resins for electronic encapsulation (1994)
    Springer
    Journal of polymer research 1 (1994), S. 103-108 
    Details
    ISSN: 1572-8935
    Keywords: Semiconductor encapsulant ; Cresol formaldehyde novolac epoxy ; Acrylate rubber modified epoxy ; Low stress encapsulant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A process was developed to incorporate stable dispersed acrylate rubber particles in an epoxy resin matrix which greatly reduces the stress of cured epoxy resins for electronic encapsulation application. The effect of the alkyl group of the acrylate monomer on the phase separation of resultant elastomers from epoxy resin was investigated. The dispersed acrylate rubbers effectively reduce the stress of cured epoxy resins by reducing the flexural modulus, while the glass transition temperature (Tg) was hardly depressed. Electronic devices encapsulated with the dispersed acrylate rubber-modified epoxy molding compounds have exhibited excellent resistance to the thermal shock cycling test and resulted in an extended device use life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01378600
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  • 7
    Electronic Resource
    Electronic Resource
    Sequence distribution and thermal properties of poly(butylene naphthalate terephthalate) (1997)
    Springer
    Journal of polymer research 4 (1997), S. 139-145 
    Details
    ISSN: 1572-8935
    Keywords: BHBT ; BHBN ; Copolyesters ; Sequence distribution ; Activation energy of degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Poly(butylene naphthalate terephthalate) (PBNT) copolyesters were synthesized from bis(4-hydroxybutyl) terephthalate (BHBT) and bis(4-hydroxybutyl) naphthalate (BHBN) as starting materials. BHBT and BHBN were either homopolymerized or copolymerized at 260∼270 °C in the presence of titanium tetrabutoxide (TBT) as a catalyst to provide PBNT with various compositions. The copolyesters were characterized using inherent viscosity, X-ray, d.s.c., t.g.a. and 1H NMR. The composition and sequence distribution of the copolyesters was determined from 1H NMR spectra. The copolyesters exhibited a degree of randomness of about 1, indicating that the reactivity of BHBT and BHBN was almost the same. X-ray and d.s.c. showed PBNT copolyesters to be crystalline polymers. T.g.a. kinetics showed PBNT copolyesters to exhibit higher degradation activation energy, that is, better thermal stability, than PBTs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10965-006-0018-y
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  • 8
    Electronic Resource
    Electronic Resource
    Poly(ethylene naphthalate) formation 1. transesterification of dimethylnaphthalate with ethylene glycol (1994)
    Springer
    Journal of polymer research 1 (1994), S. 131-139 
    Details
    ISSN: 1572-8935
    Keywords: Poly(ethylene naphthalate) ; Transesterification kinetics ; Reaction order ; Activation energy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The transesterification of dimethyl naphthalate (DMN) with ethylene glycol (EG) was kinetically investigated in the presence of various catalysts at 185 °C. The transesterification was assumed to obey first-order kinetics with respect to DMN and EG, and a rate equation was derived. The rate constant of transesterification which calculated from the quantity of methanol distilled from the reaction vessel was used to evaluate each metal compound in its activity. The first-order dependence on the catalyst concentration is valid below a critical concentration which was found to be dependent on the catalyst type. The order of decreasing catalytic activity of various metal ions was found to be: Pb ≥ Zn 〉 Co 〉 Mg 〉 Ni ≥ Sb. But in the case of highly basic metal salts, the rate constants were found to be extremely large at the initial stage of the reaction, and then rapidly decreased with the progress of the reaction. Effects of reaction temperature were also discussed. The activation energies for zinc acetate and lead acetate were 97.84 and 97.2 KJ/mol, respectively, which were calculated from Arrhenius equation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01374088
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  • 9
    Electronic Resource
    Electronic Resource
    Crystallization kinetics and multiple melting point phenomena of polybutylene naphthalate terephthalate (PBNT) copolyesters (1997)
    Springer
    Polymer bulletin 39 (1997), S. 185-192 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. The melting behavior and crystallization kinetics of PBNT copolyesters were studied using differential scanning calorimetry (d.s.c.). The Avrami exponent, n, increased from 2.5 to 3.0 with increasing of annealing temperature between 161 °C and 170 °C. The Avrami rate constant K increased with naphthalene content while activation energy decreased with naphthalene content. PBNT copolyesters showed three melting peaks, namely minor, lower and upper peaks respectively. The minor peak and lower peak grew with the increasing annealing temperature and holding time, while upper peak decreased. When scanning rate increased, minor peak and lower peak shifted to high temperature but upper peak decreased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002890050137
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  • 10
    Electronic Resource
    Electronic Resource
    2,6-Dibromo-3,5-dimethyl-4-hydroxybenzyl ether and epoxy systems (1991)
    Springer
    Polymer bulletin 25 (1991), S. 279-286 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Meta-halogenated phenols are generally known to be more chemically and thermally stable than their ortho-or para-halogenated counterparts. A novel compound, 2,6-dibromo-3,5-dimethyl-4-hydroxybenzyl ether, is synthesized and is being used to incorporate this stable meta-bromo-phenol moiety into epoxy resins. In electronic encapsulation applications, epoxy derivatives of novolacs containing meta-bromo-phenol have exhibited exceptional hydrolytic and thermal stability compared to the conventional tetrabromobisphenol-A epoxies which are ortho-brominated phenolics. The meta-bromo-phenol moiety contributes to the extended device reliability life while providing fire retardency property.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310804
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